Attachment for routers.



'PATENTED JULY 3, 1906.

V. BOYLE.

ATTAGHMENT FOR ROUTBRS.

2 SHEETS-SHEET 2.

APPLICATION FILED DEG.30,1904.

in m m u m UMTEE' STATES PATENT OFFICE.

Specification of Letters Patent.

Patented July 3, 1906.

Application filed December 30,1904. Serial No. 238,942. I

To (Ll/Z whom/it mag concern:

Be it known that I, VERNON RoYLE, a citi- Zen of the United States, and a resident of Paterson, in the county of Passaic and State of New Jersey, have invented a newand .useful Attachment for Routers, ofwhich the folreceive a beveling-cut from a cutter set in the chuck of the ordinary router-spindle.

A practical embodiment of my invention is represented in the accompanying drawings,

in which Figure 1 is a top plan viewof a portion .of

the table of a routing-machine of any well-z known or approved form, showing the platesupport clamped thereon in position for holding a plateto be beveled. Fig. 2 is a .view in end elevation showing invertical section the ordinary routing-spindle 1n its operatlve relation with respect to the plate-support. Fig. 3 is an enlarged view, in vertical section, showing the manner of holding the beveling-cut-- ter in operativerelation to the routing-tool. Fig. 4 is a view of the routing-tool in elevation, showing the recess for receiving the beveling-cutter. Fig. 5 is a.bottom plan view of the routing-tool. Fig. 6 is a top plan view of the beveling-cutter. Fig. 7 represents in top plan and longitudinal section the collar for holding the beveling-cutter to the routing-tool, and Fig. 8 is a top plan view of the rotary guide.

The table of the router is denoted by 1. On the table 1 when the router is to be used for beveling purposes the bed plate or support 2 is clamped for the purpose of supporting and retaining the plate to be beveled in position.

The support 2 is provided at its opposite ends with upwardly-extending ears 3 and 4, in which there is mounted a rock-shaft 5, carrying on its opposite ends, just inside the ears 3 and 1, levers, the hubs of which are denoted, respectively, by 6 and 7. The said levers are quite similar in their structure, each being provided with a rearwardly-extended arm 8 and a. forwardly-extended arm 9, the forwarcllyeextending arms-9 of the levers supporting between their free ends a presser bar or clamp 10 forresting on the plate near the edge. where it is to be operated upon by the beveling-cuttertohold it firmly on the support 2.

The presser+bar=10 is secured between the arms 9 by means of screws 11 12, which will permitit torock laterally to a suflicient extentto adjust its lower surface flatly to the top of the plate. The presser bar or clamp 10 isforced toward the support .2 by means of thumb-screWs-13 14, seated in the support 2 with their upper ends bearing against the under sidesof the outer ends of the arms 8 of the levers, and the lifting ofthe presser bar or clamp 10. from the plate to permit its removal or adjustment is provided for by a coilspring 15, having one end fast to a collar-16, fixed on therock-shaft 5, and its other end attached to a pin .17, set in the rear of the ear3. The presser bar or clamp 10 carries a gage 18, consisting of a flat strip extending along the top, of the bar 10 and projecting in front of it, as clearly shown, the said gage 18 being pivotally secured to the. barlO by means of depending ears 19 20, made fast to the under side ofthegage, through which screws 21. 22 extend into screw-threaded sockets in the opposite ends of the bar 10.

The relation of the gage 18 and its supporting-ears to the bar 10 is such that when the gage. is tilted over toward the front into an upright position (indicated in dotted lines, Fig. 2) its lower edge will indicate the line along Which the top of the bevel is to lie, and in adjusting the plate to the support 2 the plate is so manipulated that the lower edge of the gage 18 will indicate on it the line where the bevel is to terminate, and when the plate has been clamped in this position by means of the levers which control the presser bar or clamp 10 the gage 18 may be thrown back into the horizontal position shown in full lines, Fig. 2, where its advance edge serves the purpose of a track for guiding the beveling-cutter during its operation as follows: The spindle of the router is denoted by 23. In it there is a rod 24, operated by a hand-piece 25 and provided at its lower end with a screw-threaded portion 26, which engages the shank of the expanding and contracting check 27 for holding the router-tool to the spindle. The routing-tool is denoted by 28, and while its cutting edge is left in its usual form for routing its face is provided with a recess or groove 29 for the reception of the shank 30 of a beveling-cutter 31.

The beveling-cutter 31 consists, substantially, of an inclined blade projecting laterally from the shank 30, the said shank 30 be ing provided with a part immediately above the blade 31 somewhat deeper than the recess or groove 29 and with a further upwardly-extending part 32 just the depth of the recess or groove 29, and when the said beveling-cutter is seated in the groove of recess 29 in the router it is held in position by means of a collar 33, having a central opening 34, corresponding to the size and shape of the shank of the router, and with a recess 35, extending outwardly from the inner wall of the opening 34 a distance suflicient to accommodate the deeper portion of the shank 30, located immediately above the cutting-blade, the said recess 35being at its lower end extended through to the outer wall of the collar, as shown at 36, Fig. 7, for embracing theiupper part of the blade portion 31 of the beveling-cutter. The collar 33 is held in position on the router by means of a set-screw 37.

Between the collar 33 and the lower end of the chuck 27 there is located a rotary disk 38, which is intended to travel with its periphery in contact with the forward edge of the gage 18, and as the support 2 is moved along with the table 1 to present the plate to the router and beveler. The diameter of the guidedisk 38 is intended to correspond to the diameter of the circle in which the most extended portion of the cutting edge of the beveling-cutter travels, it being understood that the cutting edge referred to in this statement is that part of the entire inclined edge of the cutter which actually engages the plate, and it is the intention to have a supply of guidedisks 38 of varying diameters at hand to suit plates of different thicknesses or plates where the bevel is to be at a greater or lesser distance from the line indicated by the gage 18.

tively simple one and because of its ready adjustment to the table of a router serves to supply with comparatively little additional expense an efiicient beveling-machine, as well as a router.

What I claim is 1. The combination with the table of a routing-machine, of a plate-support removably secured thereto and provided with a guide extending along its edge, a router-spindle, a beveling-cutter removably secured to the router-spindle and a removable roller mounted on the router-spindle above the beveling-cutter in position to engage the guide at the edge of the plate-support.

2. The combination with the plate-support, a clamp for holding the plate to its support and means for adjusting the clamp toward and away from the support, of a cutter movable along the plate-support, and a gage pivoted to the clamp and extending along the edge thereof, the said age having a swinging movement over the e ge of the clamp to de termine the position ofthe plate and a swinging movement back into a horizontal plane to guide the cutter. V

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 24th day of December, 1904.

VERNON BOYLE. v Witnesses:

VERNON E. RoYLE. HEBER RoYLE. 

